Effect of the enzyme supplementation of corn/soybean meal based diets on the performance of commercial laying hens

Revista Brasileira de Zootecnia

Espíndola, Gastão Barreto¹  Fuentes, Maria de Fátima Freire¹  Freitas, Ednardo Rodrigues¹ 

[1] Universidade Federal do Ceará, Fortaleza

关键词: enzyme;    egg production;    egg weight;    feed:egg mass     IntroduçãoEntre os aditivos;    as enzimas exógenas vêm sendo utilizadas com êxito em países da Europa;   

DOI  :  10.1590/S1516-35982000000400022

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

- This experiment was conducted to study the effect of the inclusion of a commercial enzyme complex (alpha-amylase, xylanase and proteases) especific for corn and soybean meal based diets, on laying hens performance. One hundred and twenty eight Hy-line White Leghorns hens with 68 weeks of age, in the 2nd cycle of production were assigned to a completely randomized block design with four replications of four birds per block, totalizing 32 birds per treatment. Two isonitrogenous diets with different levels of metabolizable energy (ME) were formulated based on corn, soybean meal, wheat bran and supplemented or not with enzyme. The treatments were: T1 - diet with 2850 kcal ME/kg; T2 - diet with 2850 kcal ME/kg and 0.1% enzyme; T3 - diet with 2750 kcal ME/kg; T4 - diet with 2750 kcal ME/kg and 0.1% enzyme. The experiment was run for 112 days divided in four periods of 28 days each. The studied variables were: egg production (% hen/day), feed intake (g/bird per day), egg weight (g), feed:egg mass (kg feed/kg egg), weight gain (g) and feed cost. Analysis of variance showed no effect of the enzyme supplementation on any of the studied variables. Diets supplemented with enzyme at the evaluated levels did not affect laying hens performance.

【 授权许可】

CC BY-NC